Merged in fvacek/nuttx (pull request #572)

Fixed nucleo-l432kc broken build when CONFIG_USERLED_LOWER defined

Approved-by: Gregory Nutt <gnutt@nuttx.org>

configs/nucleo-l432kc/include/board.h

@@ -45,7 +45,9 @@
 # include <stdint.h>
 #endif
 
+#ifdef __KERNEL__
 #include <stm32l4.h>
+#endif
 
 /************************************************************************************
  * Pre-processor Definitions

configs/nucleo-l432kc/src/nucleo-l432kc.h

@@ -87,6 +87,7 @@
 #define GPIO_LD2 \
   (GPIO_PORTA | GPIO_PIN5 | GPIO_OUTPUT_CLEAR | GPIO_OUTPUT | GPIO_PULLUP | \
    GPIO_SPEED_50MHz)
+#define LED_DRIVER_PATH "/dev/userleds"
 
 /* Buttons
  *

configs/nucleo-l432kc/src/stm32_appinit.c

@@ -51,6 +51,7 @@
 #include <nuttx/board.h>
 #include <nuttx/sdio.h>
 #include <nuttx/mmcsd.h>
+#include <nuttx/leds/userled.h>
 
 #include <stm32l4.h>
 #include <stm32l4_uart.h>
@@ -135,6 +136,16 @@ int board_app_initialize(uintptr_t arg)
     }
 #endif
 
+#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize(LED_DRIVER_PATH);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
 #ifdef HAVE_RTC_DRIVER
   /* Instantiate the STM32L4 lower-half RTC driver */